[gnome-shell] st: Adjust theme test

[Jonas Ådahl <jadahl src gnome org>]

commit 957fa910b32ac4a2e132c5d86dcff1dfd180fe48
Author: Florian Müllner <fmuellner gnome org>
Date:   Sun Aug 25 16:57:11 2019 +0300

    st: Adjust theme test
    
    Mutter's Clutter fork can no longer be initialized separatedly, as
    its backend now draws from MetaBackend. Adjust the code to use the
    newly added test initialization function instead to get the test
    back up.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/691

 src/st/meson.build  |  2 +-
 src/st/test-theme.c | 10 ++++++++--
 2 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/src/st/meson.build b/src/st/meson.build
index 1097a54c85..764ff0db48 100644
--- a/src/st/meson.build
+++ b/src/st/meson.build
@@ -136,7 +136,7 @@ libst_dep = declare_dependency(link_with: libst,
 test_theme = executable('test-theme',
   sources: 'test-theme.c',
   c_args: st_cflags,
-  dependencies: [clutter_dep, gtk_dep],
+  dependencies: [mutter_dep, gtk_dep],
   build_rpath: mutter_typelibdir,
   link_with: libst
 )
diff --git a/src/st/test-theme.c b/src/st/test-theme.c
index 0d6acd1357..bd422da006 100644
--- a/src/st/test-theme.c
+++ b/src/st/test-theme.c
@@ -25,6 +25,7 @@
 #include "st-button.h"
 #include <math.h>
 #include <string.h>
+#include <meta/main.h>
 
 static ClutterActor *stage;
 static StThemeNode *root;
@@ -536,11 +537,16 @@ main (int argc, char **argv)
   StThemeContext *context;
   PangoFontDescription *font_desc;
   GFile *file;
+  g_autofree char *cwd = NULL;
 
   gtk_init (&argc, &argv);
 
-  if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
-    return 1;
+  /* meta_init() cds to $HOME */
+  cwd = g_get_current_dir ();
+
+  meta_test_init ();
+
+  chdir (cwd);
 
   /* Make sure our assumptions about resolution are correct */
   g_object_set (clutter_settings_get_default (), "font-dpi", -1, NULL);